Advertisements
Advertisements
Question
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
Advertisements
Solution
An anion gets formed when one or more electrons are gained. Thus, there are more electrons than protons. The nucleus's effective positive charge is reduced, resulting in less inward pull. As a result, the size becomes larger.
\[\ce{\underset{(2, 8, 7)}{Cl}+e- ->\underset{(2, 8, 8)}{Cl-}}\]
RELATED QUESTIONS
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Give reason for the following:
Argon atom is bigger than chlorine atom.
Write the name and symbol of the element from the description.
The atom having the smallest size.
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
_______ is the distance between the nucleus of the atom and its outermost shell.
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If the atomic number of carbon is 6, the atomic number of silicon is ______
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
Which of the following gives the correct increasing order of the atomic radii of O, F, and N?
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.
- Where in the periodic table are elements X and Y placed?
- Classify X and Y as metal (s), non-metal (s) or metalloid (s)
- What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed
- Draw the electron dot structure of the divalent halide
The diagram below shows part of the periodic table.
- Which elements would react together to form covalent compounds?
- Between the two elements W and Z, which will have a bigger atomic radius? Why?
